amphetamine, pep pill, upper, speed - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

analeptic - a medication used as a stimulant to the central nervous system

aphrodisiac - a drug or other agent that stimulates sexual desire

butyl nitrite, isobutyl nitrite - a colorless pungent liquid sometimes used as a stimulant drug by drug abusers

drug - a substance that is used as a medicine or narcotic

kat, khat, qat, quat, African tea, Arabian tea, cat - the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant; "in Yemen kat is used daily by 85% of adults"

methylphenidate, Ritalin - central nervous system stimulant (trade name Ritalin) used in the treatment of narcolepsy in adults and attention deficit disorder in children

popper - a container of stimulant drug (amyl nitrate or butyl nitrite)